2.5 Topic 3 Wrap Up Test

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1.  Drag the words to complete the table.
Energy exists in many different forms. Energy can be transformed from one type of energy to another.

A. A form of energy you can see ​ (a)  

B. A form of potential energy stored in batteries and fuels ​ (b)  

C. A form of energy that moves through wires ​ (c)  

D. the kinetic energy of the particles of matter ​ (d)  

E. a form of energy that you can hear ​ (e)  

• light
• chemical
• electrical
• thermal
• sound

2. A computer monitor transforms ​ (a)   into ​ (b)   to make computer monitor show an image.

• electrical
• thermal
• light 
• chemical
• light
• thermal 

3. 3. Look at the image. Rodrigo has a battery, wires, and an LED bulb. He wants to make a circuit that lights up the LED bulb. Where would Rodrigo connect wires to complete the circuit?

• 1. A to B and C to D

• 2. A to D and A to C

• 3. A to C and B to D

• 4. A to B and A to C

3. Part B Look at the picture. Rodrigo has a battery, wires, and an LED bulb. He wants to make a circuit that lights up the LED bulb. Where would he connect wires to complete the circuit?

• A. two nails

• B. two pieces of string

• 2. C. two pens

• D. two pencils

4. Which list contains the minimum items needed to build a circuit that produces light energy?

• A. String, light bulb, battery

• B. Light bulb, string, wire

• C. Battery, wire, light bulb

• D. Wire, string, battery, light bulb

5. Look at the picture. All of the LED lights are lit. If a student cuts the wire at location B, (a)   . If the student cuts the wire at location D, (b)  

• all the LED bulbs will remain lit
• all LED bulbs will darken
• LED bulbs 1 and 2 will darken
• LED bulbs 3 and 4 will darken
• LED bulb 4 will darken
• all LED bulbs will remain lit
• LED bulb 3 will darken

6. 6. Look at the image. A student built this circuit. As shown, the light bulb will be ​ (a)   You know this because the ​

​ (b)  

• dark
• lit
• wires are not connected to the bulb
• wires are connected to the battery and the bulb
• wires are not connected to the battery

7. Two students are exploring a field close to their school. They are looking at flowers and insects using a hand lens. Part A: Why are the students using a hand lens?

• A. To make the flowers and insects appear smaller

• B. To make the flowers and insects appear larger

• C. To see the opposite side of the flowers and insects

• D. To put more light on the flowers and insects

7. Part B: How does a hand lens affect light?

• A. Light is refracted through the hand lens.

• B. Light is reflected through the hand lens.

• C. Light is absorbed by the hand lens.

• D. Light passes in a straight line through the hand lens.

8. Look at the picture. A microscope is used to make tiny things visible to scientists. As light passes through the lenses in the microscope, the light hits a mirror. What happens to the light as it hits the mirror?

• A. The light reflects.

• B. The light refracts.

• C. The light is absorbed.

• D. The light stops moving.